JPH08138455A - Twist pair cable for high speed transmission and using method of it - Google Patents

Abstract

PURPOSE: To provide a twist pair cable, which is provided with an excellent data transmitting property, is excellent in weather resistance and noise resistance, and can be used in the outdoors, for high speed transmission. CONSTITUTION: An insulated core wire 13 is constructed of a conductor 11 and an insulator layer 12 formed on the outside of the conductor 11, a twist pair wire 14 is constructed of two insulated core wires 13 twisted together at the predetermined twisting pitch, an insulator layer 15 is formed on the outside of bound four twist pair wires 14, an aluminum wrap tape (Al tape) 16 serving as a metallic tape for shielding is wound on the outside of the insulator layer 15, an outer coating 17 made of polyethylene serving as an insulating member is formed on the outside of the Al tape 16, and consequently, a twist pair cable 18 for high speed transmission for the outdoor use is constructed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a twisted pair cable for high speed transmission which is routed outdoors and used for connection between a plurality of data terminal equipments and a method of using the twisted pair cable.

[0002]

2. Description of the Related Art As a twisted pair cable for high speed transmission, according to the EIA / TIA-568 regulations established by the EIA (American Electronics Industry Association) and TIA (American Telecommunications Industry Association),
Generally, a transmission rate of 10 Mbps (category 3) and a transmission rate of 100 Mbps (category 5) are used, which are indoor specifications, and UTP (Unsh
The mainstream is the use of Fielded Twisted Pair, ie unshielded twisted pair cable.

By the way, this type of twisted pair cable is a cable having a specification characteristic of a transmission rate of 100 Mbps, in consideration of a future high-speed transmission wiring network, and is assumed to be used indoors as described above. Therefore, it is not necessary to consider weather resistance such as water resistance and fading resistance.

Therefore, since such a twisted pair cable for indoor high-speed transmission cannot be used outdoors as it is, it is conventionally used as a cable for connecting a plurality of data terminal devices to the outside. Uses an outdoor coaxial cable having weather resistance and noise resistance, and when connecting a plurality of data terminal devices that are respectively installed in a plurality of buildings and configure a so-called LAN, for example, as shown in FIG. As shown in FIG. 5, a plurality of data terminal devices (not shown) installed in the adjacent buildings 1a and 1b, respectively, are twisted pair cables for indoor high-speed transmission to a plurality of concentrators 2 called HUBs. UTP2 ', these concentrators 2 are connected to a plurality of transceivers 3 by transceiver cables 3', and The transceivers 3 are interconnected with each other by the indoor coaxial cable 4 described above, and are mounted on both ends of the connector 5a attached to the end of the indoor coaxial cable 4 and the outdoor coaxial cable 6 routed outdoors. And the connector 5b is connected via the adapter 5c that constitutes the connecting means 5 together with both connectors 5a and 5b,
A connection is established between a plurality of data terminal devices installed in both buildings 1a and 1b.

[0005]

However, even if the transmission rate of UTP2 'is 100 Mbps as described above,
Since the transmission speed of the transceiver cable 3 ', the indoor coaxial cable 4 and the outdoor coaxial cable 6 arranged outdoors is about 1/10 of that, about 10 Mbps, the data transmission speed is transceiver cable 3', indoor coaxial. There is a problem that the core equipment having a high-speed transmission function cannot be constructed because it is limited by the cable 4 and the outdoor coaxial cable 6.

Therefore, the present invention has been made in order to solve the above problems, and has excellent data transmission characteristics and can be used outdoors with excellent weather resistance and noise resistance. It is an object to provide a twisted pair cable for high speed transmission.

[0007]

A twisted pair cable for high speed transmission according to a first aspect of the present invention is formed by twisting a plurality of insulating core wires composed of a conductor and an insulating layer formed on the outer side of the conductor. From a plurality of twisted pair wires, an insulating layer formed outside the plurality of twisted pair wires, a shielding metal tape wound around the insulating layer, and an insulating material formed outside the metal tape It is characterized by comprising an outer cover.

As a method of using the twisted pair cable for high speed transmission as described in claim 4, the high speed transmission of the data is achieved by arranging the twisted pair cable for outdoor connection and connecting it to a plurality of data terminal devices. Transmission becomes possible.

[0009]

According to the first aspect of the invention, the metal tape is wound on the outer side of the insulating layer formed on the outer side of each twisted pair wire, and the outer cover is formed on the outer side of the metal tape. It is possible to provide a twisted pair cable for high speed transmission, which has data transmission characteristics equivalent to UTP and is excellent in weather resistance and noise resistance.

By using the twisted pair cable for high speed transmission having such characteristics as described in claim 4, it is installed between a plurality of data terminal devices which are respectively installed in a plurality of buildings and constitute a so-called LAN. High-speed data transmission becomes possible, and the construction of core equipment having a high-speed transmission function is realized.

[0011]

1 is a perspective view of an embodiment of the present invention, FIG. 2 is a sectional view, and FIG. 3 is an explanatory view of a state of use.

As shown in FIGS. 1 and 2, the outer diameter is 0.5.
The conductor 11 made of a 1-mm single-core copper alloy wire and the insulator layer 12 formed on the outside thereof and having an insulation thickness that meets the above-mentioned category 5 electrical characteristic standards have an outer diameter of 0.9.
Insulated core wire 13 of 5 mm is configured, and two insulated core wires 13 are formed.
Are twisted at a predetermined twist pitch to form four twisted pair wires 14, and the twist pitch affects the near-end crosstalk attenuation amount of the standard value of category 5 described above, so that the twist pitch is 10 to 20 mm. Four different pitches are set from the twist pitch range.

And these four twisted pair wires 14
Are bundled and an insulating layer 15 is formed on the outer side thereof, and an outer diameter of 6.0 mm or less (here, 5.3 to 5.4 m) used indoors by these twisted pair wires 14 and the insulating layer 15.
m) UTP is configured.

Further, an aluminum wrap tape (hereinafter referred to as an Al tape) 1 having a thickness of 0.05 to 0.10 mm is provided as a shield metal tape on the outside of the insulating layer 15.
6 is wound, and an outer jacket 17 made of polyethylene, which is an insulating material, having a thickness of 0.5 to 1.5 mm is formed on the outside of the Al tape 16 to have an outer diameter of 6.3 to 8.4 mm for outdoor use. The twisted pair cable 18 for high speed transmission is configured.

Next, in the case of connecting a plurality of data terminal devices which are respectively installed in a plurality of buildings and constitute a so-called LAN by the twisted pair cable 18 for high speed transmission having such a structure, as shown in FIG. 3, for example. In addition, a plurality of data terminal devices (not shown) installed in adjacent buildings 19a and 19b are provided in both buildings 19a and 19b.
Connected to a concentrator 20 called HUB in
Both concentrators 20 are connected by a twisted pair cable 18 for high speed transmission arranged outdoors.

Therefore, since the Al tape 16 is wound around the insulating layer 15 of the UTP used indoors and the outer cover 17 is formed on the outer side of the Al tape 16, the conventional UT is used.
It is possible to provide a twisted pair cable 18 for high speed transmission which has a data transmission characteristic of 100 Mbps equivalent to that of P, and is excellent in weather resistance and noise resistance, and the twisted pair cable 18 for high speed transmission having such characteristics is provided. By connecting both concentrators 20 in both buildings 19a, 19b, it becomes possible to perform high-speed transmission of data between a plurality of data terminal devices installed in both buildings 19a, 19b, and high-speed transmission. It is possible to build a core facility having a function.

Further, since the Al tape 16 having good conductivity is used as the shielding metal tape, the electrostatic shielding effect is particularly excellent and the electrostatic noise can be more surely prevented. Since it is also lightweight, it is easy to handle and can have appropriate hardness as a cable, and it has excellent impact resistance.

A copper wrap tape made of copper having good conductivity may be used as the shielding metal tape.
In this case, as in the case of the Al tape 16, the electrostatic shield effect is excellent and the electrostatic noise can be prevented more reliably.

Further, as the shielding metal tape, iron or nickel wrap tape having a high magnetic permeability may be used. In the case of these tapes, the magnetic shield is particularly excellent and the magnetic noise is more surely secured. Can be prevented.

Further, as the shielding metal tape, a metal tape made of the above-mentioned metal having good conductivity and a metal tape made of a metal having high magnetic permeability may be used in combination. In this case, electrostatic noise and magnetic Both noises can be prevented more reliably.

Further, in the above-mentioned embodiment, the case where the present invention is applied to the one composed of four pairs of twisted pairs has been described, but it is needless to say that the present invention can be applied to many pairs other than four pairs.

[0022]

As described above, according to the first aspect of the invention, the metal tape is wound on the outer side of the insulating layer formed on the outer side of each twisted pair wire, and the outer cover is formed on the outer side thereof. Therefore, as with conventional UTP, the transmission rate is 10
It is possible to provide a twisted pair cable for high speed transmission, which has a data transmission characteristic of 0 Mbps and is excellent in weather resistance and noise resistance and which is most suitable for outdoor use.

When a twisted pair cable for high-speed transmission having such characteristics is arranged outdoors as described in claim 4 and used for connection between a plurality of data terminal equipments, for example, Between a plurality of data terminal devices that are respectively installed in a plurality of buildings and form a so-called LAN, a transmission speed of 1
High-speed data transmission becomes possible as compared with the case of using a 0 Mbps coaxial cable, and it is possible to construct a core facility having a high-speed 100 Mbps transmission function.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a sectional view of an example.

FIG. 3 is a schematic diagram for explaining a usage state of an embodiment.

FIG. 4 is a schematic diagram for explaining a usage state of a conventional example.

FIG. 5 is a schematic view of part of a conventional example.

[Explanation of symbols]

 11 conductor 12 insulating layer 13 insulating core wire 14 twisted pair wire 15 insulating layer 16 Al tape (metal tape) 17 jacket 19a, 19b building 20 concentrator

Claims (4)

[Claims] 1. A plurality of twisted pair wires formed by twisting a plurality of insulating core wires composed of a conductor and an insulator layer formed on the outer side thereof, and an insulating layer formed on the outer side of the plurality of twisted pair wires. A twisted pair cable for high-speed transmission, comprising: a shield metal tape wound around the insulating layer; and a jacket made of an insulating material formed outside the metal tape. 2. The twist pitch of each twisted pair wire is 1
The twisted pair cable for high-speed transmission according to claim 1, wherein the twisted pair wire has a twist pitch of 0 to 20 mm and is different from each other. 3. The twisted pair cable for high speed transmission according to claim 1, wherein the insulating layer has an outer diameter of 6.0 mm or less. 4. A high-speed data transmission method comprising arranging the twisted pair cable for high-speed transmission according to claim 1 outdoors to use it for connection between a plurality of data terminal devices.